The great roadrunner, found in parts of the Southwest, is a very fast bird on the ground. It has been recorded as reaching speeds as high as 42 km/h, although it normally runs about 32 km/h. Usain Bolt has a record speed in the Olympics of running about 23.35 mph.

(a) If we use the 32 km/h for the roadrunner’s speed, who ran faster—the roadrunner or Usain Bolt?

(b) If we use the 42 km/h for the roadrunner’s speed, who ran faster—the roadrunner of Usain Bolt? 

When necessary round your answers to the nearest hundredth.